Pkoceedings of Seventeenth j^ormal Institute 143 



Table VI. 



RHODE ISLAND STATION RESULTS 



Comparison between constant amounts of CaO in tlie form of ground lime- 

 stone of varying degrees of fineness — burnt lime as check. All lime 

 from same rock. Complete fertilizers applied throughout, both years. 



Treatment 



No lime 



Limestone 10-20 mesh 



Limestone 20-40 niesii 



Limestone 40-80 mesh 



Limestone finer than 80 mesh 



Limestone unsifted 



Slaked lime 



CORNELL UNIVERSITY STATION RESULTS 



Yield of crops. Percentage deviation from normal yields 



(Discussion of results included in Tables VI and VII. ] 



lu a summation of the activities of lime, this must be under- 

 stood: the iiner the lime carbonate the more soluble it is, and, 

 hence, the quicker and more extensive is the ultimate reaction 

 between it and the soil. The chemistry and the economics resolve 

 themselves into the fact that the largest amount of the finest form 

 of lime, for the expense of obtaining and applying, is the form to 

 apply. In making calculations it should be borne in mind, how- 

 ever, that in practice, ideal conditions of usage are probably not 

 obtained either in the use of hydrated lime or when using ground 

 limestone. 



